arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1204.4087astro-ph.EPastro-ph.SR
收藏

关于Beta Piccadic碎片盘中不寻常的气体成分

On the unusual gas composition in the Beta Pictoris debris disk

Ji-Wei Xie, Alexis Brandeker, Yanqin Wu

摘要:

与β Pic碎片盘相关的金属气体被认为不是原始的,而是来自尘埃颗粒的破坏。最近的观测表明,这种气体中的碳和氧比其他元素格外丰富,大约是其他元素的400倍。我们研究了两个相反的假设下,这种富集的起源,优先生产,其中的气体产生与观察到的不寻常的丰度(可能会发生,如果气体是由光解吸从C/O丰富的冰粒),和优先耗尽,其中的气体演变到观察到的状态从原来的太阳丰度(如果出气发生在高速碰撞下)下的一些动态过程。我们包括... ...我们发现... ...

英文摘要:

The metallic gas associated with the Beta Pic debris disk is not believed to be primordial, but arises from the destruction of dust grains. Recent observations have shown that carbon and oxygen in this gas are exceptionally overabundant compared to other elements, by some 400 times. We study the origin of this enrichment under two opposing hypothesis, preferential production, where the gas is produced with the observed unusual abundance (as may happen if gas is produced by photo-desorption from C/O-rich icy grains), and preferential depletion, where the gas evolves to the observed state from an original solar abundance (if outgassing occurs under high-speed collisions) under a number of dynamical processes. We include ... ... We find ... ...

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑